Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 92, NWS Lincoln, IL

May 23, 20114 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 23, 2011, 1:21 PM CDT for 4 counties in Illinois. It was in force for 54 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 23, 2011, 1:21 PM CDT (18:21 UTC)
Expired: May 23, 2011, 2:15 PM CDT
In force: 54 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 80.0 mph

Counties Christian County, IL, Effingham County, IL, Moultrie County, IL, Shelby County, IL

The radar

The Lincoln radar (KILX), 105 km from the middle of the area, began a volume at 18:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 23, 2:04 PM CDT	TSTM WND DMG	7 S Altamont, IL	POWERLINES DOWN
May 23, 2:15 PM CDT	TSTM WND GST 57	3 S Effingham, IL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 12:54 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.4 hours before the alert went out and 99 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 504 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1171 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

336 
WUUS53 KILX 231821
SVRILX
ILC021-049-139-173-231915-
/O.NEW.KILX.SV.W.0092.110523T1821Z-110523T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
121 PM CDT MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CHRISTIAN COUNTY IN CENTRAL ILLINOIS...
  EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHERN MOULTRIE COUNTY IN CENTRAL ILLINOIS...
  SHELBY COUNTY IN CENTRAL ILLINOIS...

* UNTIL 215 PM CDT.

* AT 118 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
  IN EXCESS OF 80 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 6 MILES SOUTHEAST OF CARLINVILLE TO TAYLOR SPRINGS
  TO BEAVER CREEK...AND MOVING EAST AT 65 MPH.

  AT 84 MPH WIND WAS REPORTED AT ALTON AIRPORT WITH THESE STORMS.

* LOCATIONS IMPACTED INCLUDE...
  TAYLORVILLE...SHELBYVILLE...EFFINGHAM...SULLIVAN...MORRISONVILLE...
  COWDEN...PANA...LAKEWOOD...BEECHER CITY...ALTAMONT...TOWER HILL...
  ASSUMPTION...SHUMWAY...STEWARDSON...WATSON...WESTERVELT...
  TEUTOPOLIS...WINDSOR...FINDLAY AND MONTROSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE 
ACROSS SOUTHWEST ILLINOIS. THIS IS AN EXTREMELY DANGEROUS SITUATION. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 3921 8882 3921 8913 3935 8915 3935 8953
      3951 8953 3968 8863 3957 8847 3918 8847
      3917 8836 3905 8836 3891 8881
TIME...MOT...LOC 1820Z 248DEG 54KT 3923 8976 3908 8946
          3882 8941
WIND...HAIL 80MPH <.75IN

$$

BARKER

2 follow-up statements

821 
WWUS53 KILX 231835
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
135 PM CDT MON MAY 23 2011

ILC021-049-139-173-231915-
/O.CON.KILX.SV.W.0092.000000T0000Z-110523T1915Z/
MOULTRIE IL-SHELBY IL-CHRISTIAN IL-EFFINGHAM IL-
135 PM CDT MON MAY 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EFFINGHAM...
SOUTHERN CHRISTIAN...SHELBY AND SOUTHERN MOULTRIE COUNTIES UNTIL 215
PM CDT...

AT 130 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM RAYMOND TO 7 MILES NORTH OF VAN BURENSBURG TO MULBERRY
GROVE...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  TAYLORVILLE...SHELBYVILLE...EFFINGHAM...SULLIVAN...MORRISONVILLE...
  COWDEN...PANA...LAKEWOOD...BEECHER CITY...ALTAMONT...TOWER HILL...
  ASSUMPTION...SHUMWAY...STEWARDSON...WATSON...WESTERVELT...
  TEUTOPOLIS...WINDSOR...FINDLAY AND DIETERICH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.

&&

LAT...LON 3921 8882 3921 8913 3935 8915 3935 8953
      3951 8953 3968 8863 3957 8847 3918 8847
      3917 8836 3905 8836 3891 8881
TIME...MOT...LOC 1835Z 248DEG 54KT 3931 8949 3916 8919
          3890 8914
WIND...HAIL 70MPH <.75IN

$$

BARKER

369 
WWUS53 KILX 231856
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
156 PM CDT MON MAY 23 2011

ILC021-139-231906-
/O.CAN.KILX.SV.W.0092.000000T0000Z-110523T1915Z/
MOULTRIE IL-CHRISTIAN IL-
156 PM CDT MON MAY 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHRISTIAN AND
SOUTHERN MOULTRIE COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE REMAINED SOUTH OF 
THE WARNED AREA.

LAT...LON 3891 8881 3921 8881 3921 8905 3922 8910
      3945 8847 3918 8847 3917 8836 3905 8836
TIME...MOT...LOC 1856Z 245DEG 52KT 3920 8888 3898 8869

$$

ILC049-173-231915-
/O.CON.KILX.SV.W.0092.000000T0000Z-110523T1915Z/
SHELBY IL-EFFINGHAM IL-
156 PM CDT MON MAY 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EFFINGHAM AND
SOUTHERN SHELBY COUNTIES UNTIL 215 PM CDT...

AT 153 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 5 MILES NORTHWEST OF WRIGHTS CORNER TO 5 MILES NORTHWEST OF
EDGEWOOD...MOVING NORTHEAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  EFFINGHAM...COWDEN...BEECHER CITY...WATSON...SHUMWAY...
  STEWARDSON...TEUTOPOLIS...DIETERICH...MONTROSE...MOCCASIN...LAKE
  SARA...MODE...HEARTVILLE...CLARKSBURG...STRASBURG...SIGEL AND
  TROWBRIDGE.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 149 AND 170.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 78 AND 104.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN LINCOLN.

&&

LAT...LON 3891 8881 3921 8881 3921 8905 3922 8910
      3945 8847 3918 8847 3917 8836 3905 8836
TIME...MOT...LOC 1856Z 245DEG 52KT 3920 8888 3898 8869
WIND...HAIL 60MPH <.75IN

$$

BARKER

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 7:03 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox, Peoria	26 min
May 22, 7:28 PM CDT	Tornado Warning	ILX	Knox, Peoria, Stark	21 min
May 22, 7:42 PM CDT	Severe Thunderstorm Warning	ILX	Knox, Peoria, Stark	33 min
May 22, 8:44 PM CDT	Special Weather Statement	ILX	Sangamon	31 min
May 22, 9:40 PM CDT	Special Weather Statement	ILX	Macon	35 min
May 23, 12:53 PM CDT	Special Weather Statement	ILX	Christian, Clay, Effingham, Moultrie, Shelby	82 min
May 23, 1:49 PM CDT	Special Weather Statement	ILX	Clay, Jasper, Richland	41 min
May 23, 2:14 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Crawford, Jasper, Lawrence, Richland	61 min
May 23, 2:17 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland, Effingham, Jasper, Shelby	58 min
May 23, 2:42 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Edgar	63 min
May 23, 2:51 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	54 min
May 23, 3:15 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	30 min
May 23, 3:16 PM CDT	Areal Flood Advisory	ILX	Clay, Richland	3 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.